A late-summer heat wave in the D.C. area will keep residents sweating until the end of the week, with high temperatures forecast to be about 10 degrees above average for this time of year.

National Weather Service officials said the forecast calls for low- to mid-90-degree temperatures while a high pressure system moves through the area.

“It’s definitely above normal,” Weather Service meteorologist Brian LaSorsa said. “The average high temperature should be 82, 81, for the next few days.”

Mr. LaSorsa said a cold front moving through the area Thursday will ease the heat and humidity.

“It should be much cooler and less humid Friday through the weekend,” he said.

The hike in temperature is a far cry from the pleasant air and cooler temperatures D.C.-area residents enjoyed this past weekend, but Mr. LaSorsa said the coming heat is still below historical records.

For both Sept. 10 and Sept. 11, the record was set in 1983 at 98 degrees. The hottest Sept. 12 on record is 96 degrees in 1931